Supporting frame for rontgen ray apparatus



Feb. 14, 1933. POI-IL 1,897,177

SUPPORTING FRAME FOR RONTGEN RAY APPARATUS Filed July 9. 1928 2Sheets-Sheet 1 INVENTO}? q w M- fi Feb. 14, 1933. POHL 1,897,177

SUPPORTING FRAME FOR RaN TGEN RAY APPARATUS Filed July 9, 1928 2Sheets-Shae; 2

Patented Feb. 14, 1933 ERNST IPOHL, KIEL, GERMANY SUPPORTING FRAME FORRbNTGEN BAY APPARATUS Application filed July 9, 1928, Serial No.

The invention relates to supporting frames for Rontgen ray apparatus andhas for its object to provide means for adjusting the height of thetranslucent screen holder relative to the carriage which carries theRontgen ray tube, and which is slidably adjustable horizontally relativeto the table or couch on which the patient is supported. According tothe invention the connecting member between the aforesaid holder and theBlintgen stand is formed by a lever device carrying a counter-poise forbalancing the mass of the holder and members supported thereon. In thismanner it is made possible to adjust the screen or the box or both partsat the same time without much effort in the vertical direction to andfrom a patient.

The lever device may, according to the in vention, be a leverparallelogram consisting of two or more parallel levers, or the leverdevice may be formed of one or more double-armed levers, one arm ofwhich carries the counterpoise, whilst the other arm engages on a rodmovable in the direction of its axis which serves as holder for thescreen and the box. The movable rod as a screen and box holder forRontgen stands is of itself known.

The counterpoise may be adjustably arranged. It may also be replaced bya Rontgen tube with protecting casing arranged on the lever device;furthermore the Rontgen tube and a special counterpoise may cooperatetogether as compensating mass.

Further details of the invention will appear from the followingspecification and the drawings and are set forth particularly in theappended claims.

In the drawings:

Fig. 1 is a perspective view of a structure embodying the leverparallelogram. 1

Fig. 2 is a diagrammatic representation of a modification.

Fig. 3 shows a constructional example with 291,384, and in Germany July12, 1927.

the double-armed lever which engages on the longitudinal movable rod.

Fig. 4 shows the adjustable arrangement of the counterpoise.

The supporting frame for the auxiliary apparatus (illuminating screenand box) is composed of a carriage a guided, for exampic, on the Rontgenstand, a frame 6 for taking a translucent screen 0 or a Rontgen box (notshown) as well as a connecting frame arranged between the carriage a andthe frame 6.

The connecting frame consists, according to Fig. 1, of a leverparallelogram which is formed by the levers (Z, 6, f and g. In order tosecure suflicient strength, all the levers are mounted in duplicate, ascan be seen in the drawings from the reference letters d 6 f and 9Equivalent lever bars are connected with one another by transverse barsh and are thus combined into a single lever whereby the strength of thewhole arrangement is increased. In Fig. 1, one lever parallelogram isrepresented which has two parallel levers in each plane. On the otherhand, Fig. 2 shows a lever parallelogram with, for example, threeparallel levers in each plane that is, in addition to the levers cl, 0,f, g, the levers m and n are provided. Alternatively two levers may bemounted parallel to one another in one plane, and more than two leversin another plane. The lever parallelograms are, for example, securedafter each adjustment by clamping screws 2' if this should be desiredfor any reason. In general, a special fixing of the lever parallelogramis not required since the system once adjusted retains its positionwithout trouble. In addition to the clamping screws 71, it is possiblealso, as can be seen i from both Figs. 1 and 2, for a connecting bar,for example, a slide 70, to be mounted, which, accordingto the exampleshown, is guided diagonally in a rectangle of the lever system and thusconnects with one another about the shaft u. Firmly connected with-[However the'ar'ran ement shown is to be v a preferred sincetlie'screeuand-the box are the strength two pivots of the lever systemlocated diagonally opposite one another. It is posthe pivot m and eachcarry ontheir prolonga V 'tionsun a weight .0 and 0 -;tobalance the massof the carrier.

According to Figilii, theconnecting frame. consists of thelongitudmallymovable rods which 'have 'bn their top "ends the frame,

parts bto take the screen 0 or thebox and are each guided on a frame 9.For thi'spure pose the rods 19 are provided on their lower ends with across-piece 17 whereby the rods p obtain. awell supported guidance onthe frame g so that they cannot rotate about their axes. At. the guidingpoints of the rods ;0 are arranged slide rollersx's or ball bearingswhich provide an easyaxial movement of the rods. t an intermediate pointon each rod p are pivoted"'onthe frame g levers t which are connectedfirmly with one another by a shaft u. A pin andslot connection L, isprovided between'lever t and rod 39. -A lever o, on which'thecounterpoise oismounted, is freely pivoted to the levers t one of theleverst is a segmentw with slot guide for a set screw, which is. adaptedtobe screwed in th-e'lever 0, which makes it posslble to set the.lever.tin a definite position in relation to the lever 41, so that the lengthofthe lever t may befaltered and thus the height of theplate holder maybe ad justed. Owing to the fact that thenioments of the Weight of theplate holder ,and the weight ofthe counterp'oise about the pivot arealways equal, the lever will always come tore's't in the position ofbalance making a definite angle withythehorizontal. '50

- rest ata certain height which naylbe de- Thus the plate holder willalways come to termined by adjusting the levertlwith ref erence to thelever 72. This" regulation may be also efiected by oblique position ofthe slot. t with reference to the lever t, whereby the slotted memberscan then be adjustably secured on the lever. In both cases theslot canbe constructed curved instead of straight. For the purpose of theinvention, 'it will also be satisfactory if'only one rod 2 andaccordingly only one'lever t, 'v is provided.

always held straight and in the correct 'posi tion'when'rais'edandlowered-.- In order with this construction of the connecting frame, to 3permit a ready adjustment'of the patient to the stand, the screen 0 ispivotally secured on one of the frame parts 6, so that the screen can beturned upas indicated in Fig. 3. This mounting of the screen so that itcan be turned up is of itself known and is also applicable in the caseof one-sided arrangement ofthe rod p as well as with the constructionalexample according to Fig. 1.

The counterpoise and the fixing device may beoperatedffrom the place ofobservationin the vicinity of the translucent screen 0 or the box, forexample, by means of a flexible'shaft or the like. Fig. 4 shows acorresponding arrangement of the counterpoise.

The "weighto isprovided with a recess with a recess with which it ismounted on the free end of theilevers f,lf (Fig-1) or the leverarrangement '0, (Fig. 3). The recess is not boredright through'so thatthe one end wall of the. weight remains complete. Secured on'this endwall and located in the'interior of the weight is a threaded spindle awith which the flexible shaft 2i leading towards the point ofobservation inthe vicinity'of the illuminating screen is connected. Thelevers f, f and o are made of steel tube; and in fact all levers andstruts of the frame may be made of tubes, even those of Fig.1. Thus theflexible'fshaft 2 ma be placed in the interior of the tubes'so that itcanbe mounted in a protected condition. On theend of the lever onwhichthe'weight 0 is mounted, there is a threaded guide 5 for thespindle a, so that by rotation of the spindle by means of the .fiexibleshaft, theposition of the weight and thus its action can be varied. Itis appropriate to'mount on theweight a tubular sleeve 25 so that onlengthening the weight lever, thespindle e is always covered andprotected.

The mounting ofthe flexible shaft in combination with the fixing."device isv eifected accordingly in similar'manner. By this means,omitting the threaded spindle 2,: the

flexible shaft .2 can be connected-directly with :the fixing screwJi(Fig. 1)=and at w I The lever'devi'c'es described 1 are, of course,

also applicable with the well-known connecting. .memberswith Rontgenstands with swinging arrangement of the screen and box holder. r

It will be noted that the support I) is intended to carry either thetranslucent screen or the Rontgen plate holder, interchangeably,whicheveris required,and the phrase support for Rontgen ray apparatusin", the

claims, is intended todescribe the support above. V

Y I claim for carrying the screen orthe plate holder, as

Riintgenobservation and photographyv of a patient in various positions,the combination 1. In Rontgen ray apparatus'adapted for of a stand, asupport for Rontgen ray apparatus adapted to be moved towards and awayfrom a patient, and means for adjustably supporting said support atvarious desired heights, comprising a member carrying said support, andarranged for movement in its axial direction only lever means pivoted tosaid stand and connected to said member to cause movement thereof insaid axial direction, and an adjustable counterpoise connected to an armof said lever means and arranged to balance said support and carried andconnected parts, at a desired height of said support, varying inaccordance with the position of said counterpoise, each difi'erentposition of said counterpoise corresponding to a different height ofsaid support.

2. In Rontgen ray apparatus adapted for Rontgen observation andphotography of a patient in various positions, the combination of astand, a support for Rontgen ray apparatus adapted to be moved towardsand away from a patient, and means for adjustably supporting saidsupport at a desired height, comprising means carrying said support,guiding means on said stand constraining said carrying means to move inits axial direction only, a multiple-armed lever pivoted to said standand having one arm connected to said carrying means by a pin and slotconnection, and an adjustable counterpoise connected to another arm ofsaid lever, arranged to balance said support and carried and connectedparts at a desired height of said support, varying in accordance withthe position of said counterpoise, each different position of saidcounterpoise corresponding to a diflerent height of said support.

3. In Rontgen ray apparatus, the combination of a stand, a support forRontgen ray apparatus, and means for adjustably supporting said supportat diflerent desired heights, comprising means carrying said support, amultiple-armed lever pivoted to said stand, one arm of said lever havinga nonrigid pivotal connection with said carrying means causing verticalmovement of the latter, a counterpoise on another arm of said lever, andmeans for adjusting the arms of said lever with respect to one anotherto equalize the moments of said support and counterpoise for a desiredadjusted height of said support.

4. In Rontgen ray apparatus, the combination of a stand, a support forliontgen ray apparatus, and means for adjustably supporting said supportat different desired heights, comprising means carrying said sup port, amultiple-armed lever pivoted to said stand, one arm of said lever havinga nonrigid pivotal connection with said carrying means causing verticalmovement of the latter, and a counterpoise on another arm of said lever,said arms being separate from one another and carrying cooperating meansadjacent to the pivots thereof whereby the angular relation between thearms may be adjusted.

5. In Rontgen ray apparatus, the combination of a stand, a support forRontgen ray apparatus, and means for adjustably supporting said supportat a desired height, comprising a pair of rods carrying said support andhaving transverse extensions, said stand serving as a guiding means forthe ends of the transverse portions of each rod and comprising guidingmeans for the vertical portion thereof, constraining the same to movevertically, a multiple-armed lever pivoted to said stand, and soconnected at one end to said rods as to cause vertical move ment thereofand a counterpoise on another arm of said lever.

6. In Rontgen ray apparatus, the combination of a stand, a support forRontgen ray apparatus, means for adjustably supporting said support at adesired height, comprising a member carrying said support, a leverpivoted intermediately to said stand, one arm of said lever beingconnected to said member, an adjustable counterpoise carried by a secondarm of said lever, a threaded guide carried by said second arm, athreaded spindle rotatably mounted in said guide and connected to saidcounterpoise, and a flexible shaft connected to said spindle andextending to the position of an operator for the apparatus.

7 In Rontgen ray apparatus, adapted for Rontgen observation andphotography of a patient in various positions, the combination of astand, a support for Rontgen ray apparatus adapted to be moved towardsand away from a patient, and means for adjustably supporting saidsupport at various desired heights, comprising a member carrying saidsupport, guiding means for causing said member, when moved, to travel ina desired path, a lever arm pivoted to said stand and connected to saidmember, a second lever arm pivoted to said stand and connected to movewith said first arm, counterpoise means carried by said second armarranged to balance said support and parts carried by and connectedtherewith, at a desired height of said support, with said second leverarm making a definite angle with the horizontal at I 1 said support and;arranged. for movement in its axial direction only, level means pivotedV to said stand and connected to said member to balance said support andcarried and connected parts at a desired height of said sup-- 1 V port,varying inaccordance ,with the position of said counterpoise, and meansoperable at a, distance from said counterpoise-for varying its positionon its said lever arm.

' "In testimony whereof I have hereunto aiffixed myfsignature. v y ,ERNS TPOHL.

